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System Maintenance
20.1 Demands
1. DFL-1500 is designed to provide upgradeable firmware and database to meet the upcoming dynamics of the Internet. New
features, new attack signatures, new forbidden URLs, and new virus definitions require timely updates to the DFL-1500.
This chapter introduces how to upgrade your system with TFTP and Web UI respectively.
2. Sometimes one may want to reset the firmware to factory default due to loss of password, firmware corrupted,
configuration corrupted. Since DFL-1500 does not have a reset button to prevent careless pressing of it, factory default has
to be set with web GUI or console terminal. Of course, when you loss the password, you have to use CLI only because you
can never enter the web GUI with the lost password.
20.2 Steps for TFTP Upgrade
Figure 20-1 Upgrade/Backup firmware from TFTP server
System Maintenance
This chapter introduces how to do system maintenance.
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DFL-1500 User Manual
Chapter 20
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